631443882 has 8 divisors (see below), whose sum is σ = 1262887776. Its totient is φ = 210481292.

The previous prime is 631443871. The next prime is 631443931. The reversal of 631443882 is 288344136.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

631443882 is an admirable number.

It is a super-2 number, since 2×631443882² = 797442752230459848, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 631443882.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52620318 + ... + 52620329.

It is an arithmetic number, because the mean of its divisors is an integer number (157860972).

Almost surely, 2^631443882 is an apocalyptic number.

631443882 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

631443882 is a wasteful number, since it uses less digits than its factorization.

631443882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105240652.

The product of its digits is 110592, while the sum is 39.

The square root of 631443882 is about 25128.5471525912. The cubic root of 631443882 is about 857.9163012447.

The spelling of 631443882 in words is "six hundred thirty-one million, four hundred forty-three thousand, eight hundred eighty-two".